The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)

Hydraulics and Fluid Mechanics in ME
The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)

Q = (3Cd × a)/√(2h)

Q = Cd × a × 2gh

Q = (2/3). Cd × a × h

Q = (Cd × a)/√(2gh)

Q = (3Cd × a)/√(2h)

Q = Cd × a × 2gh

Q = (2/3). Cd × a × h

Q = (Cd × a)/√(2gh)

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Hydraulics and Fluid Mechanics in ME
When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is

1.84(L - nH)H2

1.84(L - nH)H3

1.84(L - 0.1nH)H3/2

1.84(L - 0.1nH)H5/2

1.84(L - nH)H2

1.84(L - nH)H3

1.84(L - 0.1nH)H3/2

1.84(L - 0.1nH)H5/2

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Hydraulics and Fluid Mechanics in ME
The time oscillation of a floating body with increase in metacentric height will be

lower

higher

lower/higher depending on weight of body

same

lower

higher

lower/higher depending on weight of body

same

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Hydraulics and Fluid Mechanics in ME
Buoyant force is

The force necessary to maintain equilibrium of a submerged body

The resultant force acting on a floating body

Equal to the volume of liquid displaced

The resultant force on a body due to the fluid surrounding it

The force necessary to maintain equilibrium of a submerged body

The resultant force acting on a floating body

Equal to the volume of liquid displaced

The resultant force on a body due to the fluid surrounding it

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Hydraulics and Fluid Mechanics in ME
The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is

μ π³ N² R⁴ /1800 t

μ π³ N² R² /3600 t

μ π³ N² R⁴ /3600 t

μ π³ N² R² /1800 t

μ π³ N² R⁴ /1800 t

μ π³ N² R² /3600 t

μ π³ N² R⁴ /3600 t

μ π³ N² R² /1800 t

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Hydraulics and Fluid Mechanics in ME
In a lock-gate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)

p/sinα

2p/sinα

2p/sin (α/2)

p/2sinα

p/sinα

2p/sinα

2p/sin (α/2)

p/2sinα

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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)

Hydraulics and Fluid Mechanics in ME When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is

Hydraulics and Fluid Mechanics in ME The time oscillation of a floating body with increase in metacentric height will be

Hydraulics and Fluid Mechanics in ME Buoyant force is

Hydraulics and Fluid Mechanics in ME The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is

Hydraulics and Fluid Mechanics in ME In a lock-gate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)

Hydraulics and Fluid Mechanics in ME
The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)

Hydraulics and Fluid Mechanics in ME
When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is

Hydraulics and Fluid Mechanics in ME
The time oscillation of a floating body with increase in metacentric height will be

Hydraulics and Fluid Mechanics in ME
Buoyant force is

Hydraulics and Fluid Mechanics in ME
The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is

Hydraulics and Fluid Mechanics in ME
In a lock-gate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)